US5962928A - Electronic circuit for supplying a voltage - Google Patents

Electronic circuit for supplying a voltage Download PDF

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Publication number
US5962928A
US5962928A US08/987,988 US98798897A US5962928A US 5962928 A US5962928 A US 5962928A US 98798897 A US98798897 A US 98798897A US 5962928 A US5962928 A US 5962928A
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United States
Prior art keywords
voltage
supply
transistors
electronic circuit
supply circuits
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Expired - Lifetime
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US08/987,988
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English (en)
Inventor
Joachim Schenk
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Robert Bosch GmbH
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Robert Bosch GmbH
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Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHENK, JOACHIM
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles

Definitions

  • the present invention relates to an electronic circuit for supplying a voltage for an electronic component comprising at least two supply means for supplying voltage and/or current including, e.g. batteries, which are connectable with each other by electronic circuit means and a switch which is connected with at least one of the supply means.
  • supply means for supplying voltage and/or current including, e.g. batteries, which are connectable with each other by electronic circuit means and a switch which is connected with at least one of the supply means.
  • the safe and reliable supply of voltage must be guaranteed for various electronic and/or electrical components.
  • the voltage supply can be provided with the help of distinct and different voltage sources, for example with the help of two batteries. Measures must be taken to interrupt, if necessary, the connection between the voltage sources, so that an undesirable energy exchange between the voltage sources and/or batteries does not occur.
  • an electronic circuit which is connected between two supply batteries and includes a charging/disconnecting module. Both batteries are charged by a generator with this charging/disconnecting module and under certain conditions supply a consumer network. The connection between both batteries is then always broken with the help of this charging/disconnecting module, when the charge states of the batteries differs greatly or when the battery associated with the starter during the starting process must overcome a voltage drop.
  • the electronic circuit according to the invention has the advantage that a safe and reliable supply of voltage for an electronic component is guaranteed when it is used to supply the voltage.
  • At least two voltage or current supply sources are provided, which are connectable respectively with the help of an electronic circuit means with a common output terminal at which the voltage required for supply of an electronic consumer circuit is provided.
  • the voltage can be supplied from one of the at least two supply means, for example from two separate batteries.
  • a voltage which can be set by means of a Zener diode, drops below a predetermined threshold value, automatic switching from one supply means to another occurs.
  • a compensating current flow between the voltage and/or supply means such as batteries and/or between the supply circuits is prevented.
  • a general shut down of each supplier is also possible under special circumstances.
  • the circuit according to the invention is integrated in an advantageous manner into a fixed voltage regulator.
  • an analog switch or switches are provided with overload means, none of the electrical supply means is overloaded. Only a reduced voltage drop occurs because of the use of field effect transistors for decoupling of the electrical supply means. It is advantageously less than in a decoupling circuit which uses diodes.
  • FIG. 1 is a schematic diagram of a first embodiment of the electronic circuit for supplying a voltage according to the invention.
  • FIG. 2 is a schematic diagram of a first embodiment of the electronic circuit for supplying a voltage according to the invention.
  • Both embodiments shown in FIGS. 1 and 2 generally supply an electronic component, which is connected to the output terminal KI.U at which the voltage UV is provided.
  • the voltage UV is supplied either by one supply means or supply circuit connected to the input terminal KI.10 or by another supply means or supply circuit connected to the input terminal KI.20.
  • These supply means or supply circuits can also each be called a voltage source and include, for example, a battery.
  • the input terminal KI.10 is connected with a first battery B1 and the input terminal KI.20, with a second battery B2, which are charged by an unshown generator and supply the starter and/or the remaining power supply.
  • a control unit can be connected to the voltage supplying connector or output terminal KI.U, and is then reliably supplied with a voltage.
  • this controller is connected to the output terminal KI.U, both batteries are then similarly connected with the input terminals KI.10 and KI.20 and the power supply consumers are directly supplied from the power supply controller.
  • the power supply controller can include an additional voltage converter, which converts the voltage UV supplied to the power supply controller into different voltages which can be adjusted to the requirements of the respective consumers to be supplied.
  • This circuit arrangement according to FIG. 1 includes, besides the already-mentioned terminals KI.10, KI.U with the supply circuit parts 1 and 2 and KI.20, a plurality of field effect transistors, resistors, diodes, a Zener diode and a switch, e.g. an ignition switch, which can be employed by a vehicle power supply and also can be supplied decoupled from one or more of the supply means via diodes.
  • a switch e.g. an ignition switch
  • these circuits have the following structure: the input terminal KI.10 is connected with the cathode of the Zener diode D10 by means of both field effect transistors T10 and T11 which are switched like an analog switch.
  • a resistor R10 is connected between the gate of the field effect transistor T10 and the input terminal KI.10.
  • the anode of the Zener diode D10 is connected with a terminal of the switch Z, e.g. for example the ignition lock, by means of the field effect transistor T12 and the resistor R1.
  • the end of the switch Z remote or further away from the resistor R1 is connected to the cathodes of the diodes D1, D2.
  • the diodes D1 and D2 are supplied by the different supply means.
  • the input terminal KI.20 is connected to the output terminal KI.U via the field effect transistors T20 and T21.
  • the output terminal KI.U is connected with the source of the transistor T11.
  • Both gate electrodes of the field effect transistors T20 and T21 are connected to the input terminal KI.20 via the resistor R20.
  • Two additional field effect transistors T23 and T22 and the associated resistors R22, R23 and R24 and Z-diode D22 (at supply voltages greater than 15 V) are connected between the transistors T20, T21 and the transistors T10, T11. Additional diodes D4, D5, D6 and D7 and a resistor Rv can also be present in various embodiments.
  • FIG. 2 An embodiment of the invention is shown in FIG. 2, with whose help a compound supply, for example with the current circuits A, B, . . . , N, which can include the batteries B1, B2 . . . , Bn, can be provided.
  • This embodiment differs from the previous embodiment according to FIG. 1 only in that at least one additional circuit part 3 is present, which corresponds to the circuit part 2 in FIG. 1 and is connected by an additional diode with the switch Z.
  • the Zener diodes Z22 and Zn2 are in parallel to the resistors R22 and Rn2 respectively.
  • a Zener diode D20 be present between both gate electrodes of the transistors T20 and T21 and the drain electrode of the transistors T23, which is connected in the blocking direction, in each circuit part except the last (n).
  • FIGS. 1 and 2 The operation of the embodiments shown in FIGS. 1 and 2 is described in the following:
  • the switch Z for example the ignition switch, is supplied by a current supply circuit.
  • the switch Z is closed, the transistor 12 conducts and the anode of diode D10 is thus connected to ground.
  • the voltage at the input terminal KI.10 is larger than the Zener voltage of the diode 10
  • a voltage drop occurs at the resistor R10, which causes the field effect transistors T10 and T11 to become conducting. Since both these transistors are connected as an analog switch, the voltage of the input terminal KI.10 is made available at low impedance at the output terminal KI.U for supplying voltage.
  • the source voltage of the transistors T10 and T11 is applied then through the transistor T22, whose gate voltage is limited with a Z-diode D22 and the barrier resistor Rv at voltages greater than 15 V, which block the transistor T23 and thus also the transistors T20 and T21.
  • the switch Z is again provided with a current supply circuit. In the event that it should be related to ground, similarly a P-channel preliminary stage should be provided for the transistor T12. If the switch Z is closed, the transistor T12 is made conducting so that the anode of the diode D10 is grounded. When the voltage at the input terminal KI.10 is less than the Zener voltage of the diode D10, no voltage drop occurs at the resistor R10, so that the transistors T10 and T11 are blocking. The source voltage of the transistor T10 and transistor T11 is determined by the resistor R22, so that the transistor T22 is blocking. Thus the transistor T23 is made conducting via the resistors R24 and R23. This has the consequence that the transistors T20 and T21 are conducting.
  • the voltage , which appears at the input terminal KI.20 is thus provided at low impedance to the output terminal KI.U, whereby a supply voltage UV is made available at the input terminal KI.U, which is processed for consumer devices and can be used for supplying voltage to a power supply, for example to the power supply controller.
  • the switch Z is also supplied by a current circuit in this case. If the switch Z should be grounded, a P-channel pre-stage is similarly required for the transistor T12.
  • the transistor T12 conducts so that the anode of the diode D10 is grounded. If the voltage of the input terminal KI.10 is less than the Zener voltage of the diode D10, no voltage drop occurs at resistor R10, so that the transistors T10 and T11 are blocking. The source-voltage of the transistors T10 and T11 is determined then by the resistor R22, so that the transistor T22 blocks. Because of that also the transistor T23 is made conducting via the resistor R23 and R23, whereby also the transistors T20 and T21 are conducting. The voltage of the input terminal KI.20 is provided thus at low impedance to the output terminal KI.U and is made available there as supply voltage UV. The supply voltage UV is produced by current circuit B with the battery B2.
  • the diodes D8 and D9 decouple the control voltage for the transistor Tn2. In the event that the transistors T10 and T11 or T20 and T21 are conducting, the transistor Tn2 is then also conducting.
  • the modular structure of the voltage supply circuit according to the invention is arbitrarily expandable or open-ended.
  • the Zener diodes can also have different breakdown voltages so that the voltage supply can be switched to different voltages.
  • Control of the transistors Tx2(T12, T22, Tn2) by other signal transmitters, for example a microprocessor ⁇ C is similarly possible in one embodiment or expansion of the circuit described above and also shown in the drawing.
  • This microprocessor ⁇ C would be connected with the gate electrodes of the individual transistors Tx2 decoupled then by means of the diodes and the required potential influences would be provided for activation of the circuit processes.
  • the Zener diodes can be omitted in a circuit controlled by a microprocessor ⁇ C, in the event that it would measure the voltages or when other circuit parameters are used.
  • the circuit arrangement according to the invention at large supply current can be built so as to be discrete or separate.
  • an integration as a single or multiple chip is also possible.
  • this type of circuit can be built into a fixed voltage regulator, also when integrated in a chip which is present.
  • transistors TX1 T11, T21, Tn1
  • a simple embodiment without preventing compensating current may be built in.
  • German Patent Application 196 51 612.9 of Dec. 12, 1996 is incorporated here by reference.
  • This German Patent Application describes the invention described hereinabove and claimed in the claims appended hereininbelow and provides the basis for a claim of priority for the instant invention under 35 U.S.C. 119.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Electronic Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
US08/987,988 1996-12-12 1997-12-10 Electronic circuit for supplying a voltage Expired - Lifetime US5962928A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19651612 1996-12-12
DE19651612A DE19651612B4 (de) 1996-12-12 1996-12-12 Elektronische Schaltung zur Spannungsversorgung

Publications (1)

Publication Number Publication Date
US5962928A true US5962928A (en) 1999-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US08/987,988 Expired - Lifetime US5962928A (en) 1996-12-12 1997-12-10 Electronic circuit for supplying a voltage

Country Status (4)

Country Link
US (1) US5962928A (de)
JP (1) JPH10295037A (de)
DE (1) DE19651612B4 (de)
FR (1) FR2757324A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6229279B1 (en) 1998-09-17 2001-05-08 Volkswagen Ag Dual battery system
US6275001B1 (en) 1998-09-17 2001-08-14 Volkswagen Ag Dual-battery system
US20110012424A1 (en) * 2007-12-21 2011-01-20 Lisa Draexlmaier Gmbh Circuit for voltage stabilization in an onboard power supply
US20170036622A1 (en) * 2014-04-29 2017-02-09 Robert Bosch Gmbh Power transmission device and vehicle electrical system
US10618479B2 (en) 2014-03-05 2020-04-14 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft Controller for a multi-voltage on-board power supply system in a vehicle

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906000B4 (de) * 1999-02-15 2006-09-28 Volkswagen Ag Energieanschlussleiste für Kraftfahrzeuge
DE19921451C1 (de) * 1999-05-08 2000-11-30 Daimler Chrysler Ag Bordnetz bei Kraftfahrzeugen
DE19955721A1 (de) 1999-11-15 2001-05-17 Volkswagen Ag Zwei-Batteriensystem
DE19957478A1 (de) 1999-11-23 2001-05-31 Volkswagen Ag Zwei-Batteriensystem
DE10008266A1 (de) * 2000-02-23 2001-08-30 Bosch Gmbh Robert Vorrichtung zur Ein- und Ausschaltung eines Steuergerätes
DE10053584A1 (de) * 2000-10-25 2002-05-02 Volkswagen Ag Redundante Spannungsversorgung für sicherheitsrelevante Verbraucher
DE10103951B4 (de) * 2001-01-30 2005-01-05 Siemens Ag Energieversorgungseinrichtung für bordnetzgestützte, sicherheitsrelevante Systemkomponenten von Fahrzeugen
US7560904B2 (en) * 2005-10-03 2009-07-14 Lear Corporation Method and system of managing power distribution in switch based circuits
DE102005058822A1 (de) * 2005-12-09 2007-06-14 Daimlerchrysler Ag Vorrichtung und Verfahren zur redundanten Energieversorgung mehrerer Verbraucher
DE102014201059A1 (de) * 2014-01-22 2015-07-23 Robert Bosch Gmbh Versorgungsschaltung zur redundanten Versorgung einer Batteriesteuerung und Batterie mit redundant versorgter Batteriesteuerung
DE102018200716A1 (de) * 2018-01-17 2019-07-18 Robert Bosch Gmbh Elektrische Schaltung zur Versorgung eines Verbrauchers aus verschiedenen Spannungsquellen
JP7221098B2 (ja) * 2019-03-19 2023-02-13 株式会社ミツバ 電源供給回路

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036199A (en) * 1975-03-18 1977-07-19 Ducellier & Cie Device for protecting an ignition device for motor vehicles
US4297629A (en) * 1979-04-13 1981-10-27 Saft-Societe Des Accumulateurs Fixes Et De Traction Automatic switching arrangement for two batteries which are charged in parallel and discharged in series
US5204610A (en) * 1991-02-15 1993-04-20 Globe-Union, Inc. Long lived dual battery with automatic latching switch
DE4138943C1 (de) * 1991-11-27 1993-05-27 Robert Bosch Gmbh, 7000 Stuttgart, De
US5316868A (en) * 1992-07-21 1994-05-31 Globe-Union, Inc. Dual battery switch circuit
US5416401A (en) * 1991-06-20 1995-05-16 Wabco Standard Gmbh Dual voltage supply circuit for vehicles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3816944A1 (de) * 1988-05-18 1989-11-30 Nixdorf Computer Ag Spannungsversorgungssystem mit mehreren spannungsquellen
US5430365A (en) * 1993-07-02 1995-07-04 Tandem Computers Incorporated Power regulation for redundant battery supplies
US5536977A (en) * 1993-11-30 1996-07-16 Siliconix Incorporated Bidirectional current blocking MOSFET for battery disconnect switching
DE19548612B4 (de) * 1995-12-23 2005-10-06 Robert Bosch Gmbh Mehrkreisiges Fahrzeugbordnetz mit einem elektronischen Analogschalter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036199A (en) * 1975-03-18 1977-07-19 Ducellier & Cie Device for protecting an ignition device for motor vehicles
US4297629A (en) * 1979-04-13 1981-10-27 Saft-Societe Des Accumulateurs Fixes Et De Traction Automatic switching arrangement for two batteries which are charged in parallel and discharged in series
US5204610A (en) * 1991-02-15 1993-04-20 Globe-Union, Inc. Long lived dual battery with automatic latching switch
US5416401A (en) * 1991-06-20 1995-05-16 Wabco Standard Gmbh Dual voltage supply circuit for vehicles
DE4138943C1 (de) * 1991-11-27 1993-05-27 Robert Bosch Gmbh, 7000 Stuttgart, De
US5316868A (en) * 1992-07-21 1994-05-31 Globe-Union, Inc. Dual battery switch circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6229279B1 (en) 1998-09-17 2001-05-08 Volkswagen Ag Dual battery system
US6275001B1 (en) 1998-09-17 2001-08-14 Volkswagen Ag Dual-battery system
US20110012424A1 (en) * 2007-12-21 2011-01-20 Lisa Draexlmaier Gmbh Circuit for voltage stabilization in an onboard power supply
US9240704B2 (en) 2007-12-21 2016-01-19 Lisa Draexlmaier Gmbh Circuit for voltage stabilization in an onboard power supply
US10618479B2 (en) 2014-03-05 2020-04-14 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft Controller for a multi-voltage on-board power supply system in a vehicle
US20170036622A1 (en) * 2014-04-29 2017-02-09 Robert Bosch Gmbh Power transmission device and vehicle electrical system

Also Published As

Publication number Publication date
JPH10295037A (ja) 1998-11-04
FR2757324A1 (fr) 1998-06-19
DE19651612A1 (de) 1998-06-18
DE19651612B4 (de) 2012-09-27

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